Hi @flashfog,
That is because of this Connection: close status.
Commonly the connection is close because it’s being blocked, Though I’m not entirely certain that ModSecurity was the culprit (deactivating it was just a test), but I’ve seen this Connection: close on the past and ModSecurity was the culprit. Another possibility is you might have other security features.
I’ve tested it with the Essential Grid disable and I’m still getting that error.
The PHP memory limit on your site is still 256M, would you mind increasing that to 512M? Memory exhaustion can cause 500 Internal Server Error as you can see on my screenshot.
You have a custom function on your child theme.
function x_woocommerce_donot_remove_plugin_setting()
Would you mind removing that or switching to parent X theme for a while?
I keep getting this on your site
Do you think your DNS/server is acting up? We cant fiddle properly around on your site because of that DNS error keeps happening.
Thanks,